The physical dimensions and/or weight of a creature or object. The sizes, from smallest to largest, are Fine, Diminutive, Tiny, Small, Medium, Large, Huge, Gargantuan, and Colossal. A creature's size provides a modifier to its Armor Class and attack bonus, a modifier on grapple checks it attempts, and a modifier on Hide checks. Table 7-1: Creature Sizes in the Monster Manual and on page 220 of the Monster Manual III provide a summary of the attributes that apply to each size category.